/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hama.commons.math;

/**
 * A function that can be applied to two double vectors via {@link DoubleVector}
 * #apply({@link DoubleVector} v, {@link DoubleDoubleVectorFunction} f);
 * 
 * This class will be replaced by {@link DoubleDoubleFunction}
 */
@Deprecated
public interface DoubleDoubleVectorFunction {

  /**
   * Calculates the result of the left and right value of two vectors at a given
   * index.
   */
  public double calculate(int index, double left, double right);

}
